The Midwest Industries Alpha Series Folding Stock is constructed of high strength polymer, aluminum, and steel components. The heavy-duty side-folding mechanism is constructed from 4140 heat treated steel. The adjustable polymer cheek piece is designed with a curved, adjustable top surface for a comfortable cheek weld. The Alpha Series stock features an adjustable butt pad for increased usability with plate carriers or heavy gear. Compatible with firearms that include 1913 rail adaptor, the Alpha Series stock has a steel clamp with large surface engagement to ensure the stock is stable.